The sun has a schedule. Now so do you.
SunSignal gives your zipcode to the oldest scheduling system humans have ever used, rebuilt as software that sits next to your calendar — not in front of it.
Every moment of your day mapped to where the sun actually is — not where a clock tells it to be.
Sun rises above 6°. The 90-minute circadian anchor — light hits your eyes, cortisol signals, your day begins naturally.
Sun at ~30°. Solar noon. Cortisol at its daily high. Hard cognitive work split by the golden ratio into First-Light blocks.
Solar noon ± 30 minutes. The forgotten anchor. Your body expects a metabolic break — not lunch at your desk.
Golden hour to red hour. The warmth window. Right hemisphere activation, lower cortisol, creative work surfaces as a daily appointment.
Sun below −6°. Civil twilight closes. Melatonin begins. Sleep-onset is anchored to the sky, not your alarm setting.
Twilight-anchored bedtime via the SleepWidget. Your wind-down time moves with the season — you never have to think about it.
Work and rest mapped to your cortisol curve via the WorkWidget and HormoneDashboard. Your peak is your peak — stop scheduling deep work during the afternoon dip.
Golden hour surfaced as a daily appointment in the PhaseInfoCenter. Your best creative work has a time — and it's not at 2am.
"The sky behind every screen is your sky right now."
The sun has states — sleeping, napping, awake. The canonical line of SunSignal is: tell the sky we said hi.
Two voice registers, poetic and classic. Always respectful of the oldest clock humans have ever known.
Your zipcode. The sun's position. Your day.
SunSignal is the circadian OS that treats your biology as the operating system — not a feature to optimize, not a metric to track. Just a quiet, persistent alignment with the oldest rhythm you have.